S-tone dressing machine



(No Model.) 4 Sheets-Sheet 11. T. H. OOOK. STONE DRESSING MACHINE. No.309,603. Patented Deo. 23, 1884.

N. PETERS. PholLdhugmpher. Wnslvmlnn. D. C.

(No Model.) 4 Sheets-Sheet 2.

T. H. COOK.

STONE DRESSING MACHINE.

' No. 309,603. Patented Deo. 23,1884.

(No Modem 4 sheets-sheet 3.

' T. H. COOK.

w S-TONB DRESSING MAGHINB.-

No. 309,603. A Patented Deo. 23, 1884.

(No Model.) 4 Sheets-Sheet 4. T. H. CO0K. STONE DRESSING MACHINE.

Patented Deo. 23, 1884.

mM im j WITFESSES N @ZW/MW@ Attorney Unitarian tiTaTns ltaThiyT TriciaTHOMAS Il. COOK, OF OVVEGO, NEV YORK.

STOhlEuDRESSlNG ACHINE.

SPECIFICATION forming part of Letters Patent No. 309,603, dated December23, 1884.

Application and Mai-ch s1, 1884. (No model.)

To a/ZZ whom, it may concern:

Be it known that I, Tiroams II. Coon, a citizen ofthe United States,residing at Owego, in the county of Tioga and State of New York, haveinvented certain new and useful Improve e ments in Stone-DressingMachines; and I do wheels, Z.

hereby declare that the following is a full, clear, and exactdescription of the same, reference being had tothe an'neXed drawings,making a part of this specitcation, and to the letters and gures ofreference marked thereon.

Figure l of the drawings is a perspective view of my improved machine;Fig. 2, a side elevation thereof; Fig. 3, a longitudinal section; Fig.4L, anrend view showing` the lower portion only of the machine; Fig. 5,a detail view in perspective of one of the trip'levers with itsattachments.

The present invention has relation to stonedressing machines, and isdesigned as an improvement on my former patent, No. 237,961, datedFebruary 22, 1881; and it consists in certain details oi' construction,substantially as shown in the drawings, and hereinafter described andclaimed.

In the accompanying drawings, A repre sents the frame cl1 themaehinemrovided with tracks a, running lengthwise thereof, and uponwhich is mounted a frame, B, having suitable This frame B supports thecarriage C, upon which the stone is placed, and at one end has aprojecting rack-bar, c, engaging with a pinion, d. Upon the opposite endofthe frame I3 is a transverse shalt, e, having rigidly secured to itsprojecting ends pinions j', for engaging with rack-bars g, one upon eachside ol" the frame. The rack-bars f/ are suitably connected to inclinedplanes I), which rest upon each side of the frame l, and upon saidplanes rest the correspondinglyinclined sides E of the carriage C. Theinclined planes are for the purpose of raising or lower ing the carriageto adapt it to stones of various thicknesses placed thereon to bedressed. By turning the red c through the pinionsf and rackbars g theinclined planes are caused to move longitudinally, and, acting againstthe inclined sides E of the carriage, will elevate or lower it, ascircumstances may require. A hollow post, F, forms part of the frame A,and contains the upright h, rigidly secured at its top to a cross-bar,G, adapted to have avertically-sliding movement. This cross-bar Gsupports the ends of a series of trip-levers, II, which carry suitableknives, 7L, for cutting or dressing the stone, said cross-bar forming astop for the levers when not stopped by the knives coming in contactwith the stone. The upright h is connected to a weight, t', by means ofa cord, j, extending over a pulley, '/f, for automatically raising thecross-bar G upon the release of a pin, Z, from engagement with a socket,m, in the upright. The sliding beam I, which carries the pin Z, isprojected forward by a suitable spring, n, at its opposite end, so thatwhen the socket m is in linewith said pin it will automatically engagethere` with. This arrangement and construction of devices are the sameas those shown and described in my former patent and act in the samemanner and for a similar purpose. The backward movement ofthe beam I, torelease the pin Z from engagement with the socket m, is attained by thedog o, secured to the side of the frame B, being brought in contact witha plate, J, as the carriage and frame moves along on the tracks. Theplate J is adjustable upon the sliding beam I, so that it can be set atany distance within a certain limit to regulate the distance in whichthe carriage will travel before releasing the pin. The trip-levers H areloosely mounted upon a horizontal shaft, p, having its bearings in thesides of the frame A, and are held in place on the shaft by collars r.One end ofthe shai'tp is screwthreaded, and engages with ascrew-threaded opening in the cross-beam IV of the frame A, as moreclearly shown in Fig. 5. As the shaft p is turned by means of a suitablecrank connected to one end, the shaft will, by means of itsscrewthreaded end engaging with thescrew-threaded opening in the beamXV, be caused to move in a direction transversely, carrying with it thetrip-levers H, so that the cutters or knives connected thereto willtraverse from or toward either side of the stone in. order to work uponany part of its surface. The levers H are each provided with anadjustable weight, K, in order to increase or diminish the force of thestroke, said levers being operated by a rotary cam-shaft, L, having thecams thereon so arranged with relation to each other that the kniveswill be brought down upon the stone successively.

To prevent any one or number of the knives working, the lever or leversare held suspended at their front ends by suitable drop-weights, M,which, when allowed to descend on the rear ends of the levers, willdepress them and elevate the front or opposite ends carrying the knives.The weights M are held suspended by spring-catches N, the front endsbeing'beveled, as shown in Fig. 8, and engaging with beveled notches sin the shanks of the weight.

When it is desired to drop any one of the weights M, the spring-catch Nopposite said weight is pushed back far enough to disengage the end'ofthe catch with the notch s in the shank of the weight by means of thethumb-piece a', Fig. 3, when the latter will fall upon the lever II andhold it from contact with the cam on the shaft L by depressing its rearend.

Iniraising the weight IIby the hand-lever O, to which itis pivotallyconnected, the catchy N will automatically engage with the notch s bymeans of the spring connected to the catch, the bevel end thereofactingin connection with the bevel portion of the notch.

To the lower end of the frame A is journaled a cone-pulley, I), havingat one end, upon the outside of the frame, a pulley, t, over whichpasses a beltrq, said belt passing up and over a pulley, u, on thecam-shaft L. A belt, c, extends around the pulley I), thence up andaround a similar cone-pulley, R, said pulleys being on the same verticalplane and having one end of their shafts in the side of the frame A,while their opposite endshave their bearings in an upright, S, pivotedat its lower end to the frame. The cone-pulley R carries afriction-wheel, T, arranged to come in frictional contact with thecam-shaft L, the object of the cone-pulleys being to vary the feed ofthe stone, as is desired, either slow or fast, in the operation ofstone-dressing, the lower cone-pulley, as will be seen, operating orgiving motion to the frame B and carriage @through the medium of thepinion d and rack-bar c. As the cross-bar Gr is thrown up by the meanshereinbefore described a lever, U, connected thereto, and pivoted at itsopposite end to the frame A, throws or forces back the wheel T fromfrictional contact with the cani-shaft L. This is accomplished byforming the outer end of the lever U with an ineline or cam, w, whichbears against the upper end of the pivoted upright S, and as thecross-bar Gis elevated the cam end ofthe lever will press outward theupright, carrying with it the wheel T. Then by tightening the belt q bythe pulley y, as shown in dotted lines, the conefeed is reversed, andthe carriage G and frame B run back. A spring,V, connects the lever Uwith the pivoted upright S, so that when'the cross-bar G is pushed downthe upright will be br'ought back into position to bring the wheel infrictional contact with the cam-shaft.

I am aware that cone-pulleys have hereto fore been used in forward andreversing mechanism for saw-millcarriages, consisting of twocone-pulleys operated by a belt, the shaft of one of said pulleyscarrying a friction-pulley,

and having one end of its shaft supported in a movable arm, so as tobring the pulley in frictional contact with a similar pulley upon ashaft below it,which carries a pinion adapted to mesh with the rack of asaw mill carriage for the purpose of driving it forward or back. Itherefore wish it to be understood that I do not claim suchconstruction,broadly; but,

I-Iaving `fully described my invention, what soA I do claim as new, anddesire to secure by Letl. In astone-dressing machine, a suitablecarriage upon which the stone is placed and provided with a rack-bar,and a rotary cam-shaft for operating the knives, in combination with twocone-pulleys arranged one above the other, and having their bearings atone end in a pivoted upright, the upper one of the cone-pulleys carryinga friction-wheel adapted to come in frictional contact with the camshaft, and the lower cone pulley having a pinion with which the rack barengages, substantially as and for the purpose set forth.

2. In a stone-dressing machine, an upright connected to avertically-sliding cross-bar and to a suitable weight, and a series oftrip-levers carrying knives supported by said cross-bar, in combinationwith a releasing device operated by a carriage or frame thereof, andconsisting of a sliding bar provided with an adjustable plate, and a pinadapted to enter a hole or socket in the upright when the sliding forthe purpose set forth.

ICO

3. In a stone-dressing machine, the combination, with one or moretrip-levers carrying suitable knives, of one or more drop-weights actingupon the rear end or ends of the levers, substantially as and for thepurpose specified.

4. In a stone-dressing machine, the combination, with one orinore'trip-levers carrying the knives, of one or more drop-weightsprovided with hand-levers, and spring-catches for holding the weights inan elevated position, substantially as and for the purpose set forth.

5. In a stone dressing machine, one or more -trip-levers carryingadjustable weights and knives, one or more drop-weights provided withhand-levers, and suitable catches for holding the weights iu an elevatedposition, substantially as and for the purpose described..

6. In a stone-dressing machine, the combination, with avertically-sliding cross-bar for supporting the front ends of thetrp-1evers, of 2L lever connected to said bar and to a pivoted uprightby a suitable spring, said lever having a cam acting against the uprightto throw the Wheel of the upper oone-pu11ey out of fretional ContactWith the cam-shaft, substantially as and for the purpose speeied.

In testimony that I claim the above I have hereunto subscribed my namein the presence Io of two witnesses.

THOMAS H. COOK.

Vtnesses:

J. J. VAN KLEECK, J H. GoRYDoN BROWN.

